G - Physics – 01 – R
Patent
G - Physics
01
R
328/171
G01R 29/00 (2006.01)
Patent
CA 1111516
SAMPLE-AND-HOLD CIRCUIT WITH CURRENT GAIN Abstract of the Disclosure The subject invention is a sample-and-hold circuit that provides current gain and that is suitable for construction according to LSI (large scale integration) techniques. The circuit incorporates a bipolar transistor biased on (in the "sample" mode) to a predetermined quiescent state. A capacitor is connected across the output of the circuit (i.e. across the output of the bipolar transistor) to be charged to a certain voltage by the bipolar transistor and to store this voltage when the sample-and-hold circuit is in the "hold" mode of operation. IGFETS (insulated gate field effect transistors) are employed to bias the bipolar transistor and to switch the circuit from one mode of operation to the other.
315106
Hogeboom Robert C.
Northern Telecom Limited
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